A nurse in an emergency department is reviewing a client's ECG reading.
Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?
Prolonged PR intervals.
Nondiscernible P waves.
More P waves than QRS complexes.
No correlation between P and QRS waves.
The Correct Answer is A
First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Thrombocytopenia, or low platelet count, is a contraindication to receiving heparin.
Rheumatoid arthritis is not a contraindication to receiving heparin.
Thalassemia is not a contraindication to receiving heparin.
COPD is not a contraindication to receiving heparin.
Correct Answer is A
Explanation
Granulation tissue is new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process.
The presence of dark red granulation tissue is a sign that the wound is healing.
B.Light yellow exudate: Light yellow exudate may indicate the presence of infection and is not a sign of healing.
C. Dry brown eschar: Dry brown eschar is dead tissue that needs to be removed for the wound to heal properly.
D.Wound tissue firm to palpation: Wound tissue firm to palpation is not a specific sign of healing.
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